The 1999 Baltimore Orioles season involved the Orioles finishing fourth in the American League East with a record of 78 wins and 84 losses.

Offseason

Cuban exhibition series

In a rare event on March 28, 1999, the Orioles staged an exhibition series against the Cuban national team in Havana. The Orioles won the game 3–2 in 11 innings. They were the first Major League team to play in Cuba since 1959, when the Los Angeles Dodgers faced the Orioles in an exhibition. The Cuban team visited Baltimore in May 1999. Cuba won the second game 10–6.

Regular season

Season standings

Record vs. opponents

Notable transactions

Roster

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters

''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Pitching

Starting pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers

Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Farm system